Forschungsverbund Berlin E.v.

Heinar Schmidt

Martin Maiwald

Bernd Sumpf

Andreas Klehr

Daniel Pérez Kaiser

Martin Dr Maiwald

A method and a device for generating and for detecting a Raman spectrum enables an automated, or automatable, and at the same time quantitative SERD spectroscopy (for example concentration measurement series). To this end, during the SERD spectroscopy, a first spectrum and a second spectrum are standardized in relation to one another in terms of intensity values and a first difference spectrum is subsequently calculated, a second difference spectrum is calculated, the first difference spectrum is converted into a first transformation spectrum, the second difference spectrum is converted into a second transformation spectrum, and the Raman spectrum is calculated by adding the first transformation spectrum and the second transformation spectrum.

Method for generating and for detecting a Raman spectrum

The invention relates to a method and a device for producing and detecting a Raman spectrum. The problem addressed by the present invention is that of devising a method and a device for producing and detecting a Raman spectrum of a medium under investigation, whereby the Raman spectrum of a medium that is under investigation can be examined with a high degree of sensitivity while requiring relatively little equipment. The method is characterized by the coupling of excitation radiation into a medium () under investigation and the coupling of the electromagnetic radiation scattered by the medium () under investigation into a spectral optic system (), a laser diode () for generating excitation radiation with at least two different wavelengths (&#x3bb;, &#x3bb;) being controlled with at least two different excitation conditions and at least one Raman spectrum () being detected in each case from the scattered radiation at the different excitation wavelengths (&#x3bb;, &#x3bb;), and the Raman spectrum () of the medium () under investigation being determined from the at least two detected Raman spectra (), the two different excitation conditions for the laser diode () being adjusted by means of the electric current supplied to the laser diode ().

Growing community of inventors

Berlin, Germany

Heinar Schmidt